Step3five

.github/workflows/api.yml

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+name: API workflow
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Test python API
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
+      with:
+        python-version: '3.11'
+    - name: Install requirements
+      run: pip install -r api/requirements.txt
+    - name: Run tests and collect coverage
+      run: pytest --cov=api.calculator --cov-report=xml
+    - name: Upload coverage reports to Codecov with GitHub Action
+      uses: codecov/codecov-action@v4
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}

api/app.py

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+from flask import (
+    Flask,
+    request,
+)
+
+from calculator.calculator import Calculator
+
+app = Flask(__name__)
+
+@app.route('/api/add', methods=['POST'])
+def add():
+    return operation('add', 2)
+
+@app.route('/api/subtract', methods=['POST'])
+def subtract():
+    return operation('subtract', 2)
+
+@app.route('/api/multiply', methods=['POST'])
+def multiply():
+    return operation('multiply', 2)
+
+@app.route('/api/divide', methods=['POST'])
+def divide():
+    return operation('divide', 2)
+
+def operation(method, num_factors):
+    factors = []
+    if num_factors == 2:
+        factors.append(float(request.json.get('x')))
+        factors.append(float(request.json.get('y')))
+
+    return str(getattr(Calculator, method)(*factors))
+
+
+app.run(host='0.0.0.0', port=8080)

api/calculator/calculator.py

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+class Calculator:
+    def add(x, y):
+        return x + y
+
+    def subtract(x, y):
+        return x - y
+
+    def multiply(x, y):
+        return x * y
+
+    def divide(x, y):
+        if y == 0:
+            return 'Cannot divide by 0'
+        return x * 1.0 / y

api/calculator/test_calculator.py

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+from .calculator import Calculator
+
+
+def test_add():
+    assert Calculator.add(1, 2) == 3.0
+    assert Calculator.add(1.0, 2.0) == 3.0
+    assert Calculator.add(0, 2.0) == 2.0
+    assert Calculator.add(2.0, 0) == 2.0
+    assert Calculator.add(-4, 2.0) == -2.0
+
+# def test_subtract():
+#     assert Calculator.subtract(1, 2) == -1.0
+#     assert Calculator.subtract(2, 1) == 1.0
+#     assert Calculator.subtract(1.0, 2.0) == -1.0
+#     assert Calculator.subtract(0, 2.0) == -2.0
+#     assert Calculator.subtract(2.0, 0.0) == 2.0
+#     assert Calculator.subtract(-4, 2.0) == -6.0
+
+# def test_multiply():
+#     assert Calculator.multiply(1, 2) == 2.0
+#     assert Calculator.multiply(1.0, 2.0) == 2.0
+#     assert Calculator.multiply(0, 2.0) == 0.0
+#     assert Calculator.multiply(2.0, 0.0) == 0.0
+#     assert Calculator.multiply(-4, 2.0) == -8.0
+
+# def test_divide():
+#     assert Calculator.divide(1, 2) == 0.5
+#     assert Calculator.divide(1.0, 2.0) == 0.5
+#     assert Calculator.divide(0, 2.0) == 0
+#     assert Calculator.divide(-4, 2.0) == -2.0
+
+def test_divide_by_0():
+    assert Calculator.divide(2.0, 0) == 'Cannot divide by 0'

api/requirements.txt

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+attrs==22.1.0
+autopep8==2.0.1
+certifi==2022.12.7
+charset-normalizer==3.1.0
+click==8.1.3
+coverage==6.4.2
+coveralls==3.3.1
+docopt==0.6.2
+Flask==2.2.1
+idna==3.4
+iniconfig==1.1.1
+itsdangerous==2.1.2
+Jinja2==3.1.2
+MarkupSafe==2.1.1
+packaging==21.3
+pluggy==1.0.0
+py==1.11.0
+pycodestyle==2.10.0
+pyparsing==3.0.9
+pytest==7.1.2
+pytest-cov==3.0.0
+requests==2.28.2
+tomli==2.0.1
+urllib3==1.26.15
+Werkzeug==2.2.1

codecov.yml

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+coverage:
+  status:
+    project:
+      default:
+        target: 80%
+        threshold: 1%
+        informational: true
+    patch:
+      default:
+        target: 80%
+        threshold: 1%
+        informational: true
+ignore:
+  - "**/test_*.py"